Patent US3117733A successfully refreshed from Google Patents.
US3117733A
Expired / Lapsed
US
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Method of wet-grinding in a rotary drum
Assignee: FLSmidth and Co AS
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Filing: 1961-08-24
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Granted: 1964-01-14
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Expires: 1981-08-24
Abstract
No abstract record available.
Inventors
- 👤 Cleemann Jorgen Olav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:38
CPC Classifications
B; B02; B02C; B02C17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |